Corn-planter.



PATENTED JULY 21, 1903.

W. H. PARLIN.

CORN PLANTER.

APPLICATION FILED APR. 3, 1903.

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W. H. PARLIN. CORN PLANTER.

APPLICATION FILED APR. a. 1903.

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UNITED STATES Patented. July 21, 1903.

PATENT OFFICE.

WILLIAM H. PARLIN, OF CANTON, ILLINOIS, ASSIGNOR TO PARLIN 6t ORENDORFF COMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

CORN-PLANTER.

SPECIFICATION forming part of Letters Patent No. 734,359, dated July 21, 1903.

Application filed April 8, 1903. Serial No. 151,6 71. (N0 model.)

To 00% whom it may concern.-

Be it known that 1, WILLIAM H.PARLIN, of the city of Canton, county of Fulton, and State of Illinois, have invented certain new and useful Improvements in Corn-Planters, of which the following is a specification.

This invention relates to planters in which the seed-plates are driven from the drillshaft at times and to extents controlled through the check-row shaft.

The principal object of the invention is to minimize jar, wear, and work by diminishing the mass that is started and stopped at each hill-dropping action of the seed-plates.

Other objects are obvious from the detailed description.

The invention is exemplified in the structure hereinafter described, and it is defined in the appended claims. 7

In planters of the class to which this inyention relates it has been customary heretofore to gear each seed-plate with the drill-- the rotation of the drill-shaft through the check-row shaft. This has necessitated the use of a strong heavy clutch between the drive-pinions of the seed-plates and has imperatively demanded that both seed-plates shall be timed in unison with each other and with the clutch. There are some disadvantages in that form of construction and mode of operation which I have been able to obviate by mounting the drive-pinions of the seed-plates loosely on the drill-shaft, permitting the drill-shaft to run continuously, and compelling the pinions to partake of the motion of the drill shaft at times controlled through the check-row shaft.

One advantage of thepresent plan is the direct control of each individual seed-plate and a certain independence in timing resulting from such direct control. Another advantage lies in reducing the mass that is started and, stopped at each hill-dropping action of the seed-plate. A hill-dropping action of a seed-plate is made about once in a second. The motion consumes less than a second, and under the old style of planting the entire plateactuating mechanism,including the drill-shaft, is started and stopped at each hill-dropping action of theseed-plates. The drill-shaft extends from one seed-plate to the other, it must be strong enough to impart motion to both seed-plates without yielding to torsional stress, and its mass constitutes a very considerable part of the entire weight that is started and stopped when the seedplates are advanced a hill-dropping space. By rufining the drill-shaft continuously the work of starting and stopping the seed-plates is much reduced and the machinery is relieved to a large extent of a detrimental jar. Moreover, the application of force from the drill-shaft to the seed-plates through clutches connecting the drill-shaft directly with the pinions of the seed-wheels permits the use of clutch mechanism on the drill-shaft so light that the weight of two clutches aggregates less than the weight ordinarily embodied in a single intermediate clutch, and the mass to be stopped and started is thus still further reduced.

In the drawings forming part of thisspecification, Figure l is a plan of so much of a planter as is needed to explain my invention, and Fig. 2 is an enlarged side elevation of a clutch and the adjuncts thereof.

A drill-shaft is shown at 1, a check-row shaft at 2, a seed-plate at 3, and a seed-wheel at 4.. The drive-pinion 5 of the seed-wheel has a hub 5, which is journaled loosely on the drill-shaft. A cam 6 is formed on or attached to the outer face of the drive-pinion.

A pawl 7 is pivotally connected at 7 a with the pinion. It has extensions 8, through which it is controlled. It has a lateral stud 10, adapted to engage a ratchet-wheel on the drill-shaft,

and a spring 18 tends to hold the stud in engagement with the ratchet-wheel. The ratchet-wheel 9 has a hub 11, which is fixed onto the drill-shaft by a pin 12 in this instance, and the perimeter of. the ratchetwheel is preferably corrugated or provided with a multiplicity of concave depressions, with any one of which the stud of pawl 7 may engage. The check-row shaft 2 has a clip 13. A throw-out pawl 14 is pivoted to the clip at in the path of extensions 8 of pawl 7.

Fig. 2 of the drawings represents the stud 10 of pawl 7 held out of contact with the ratchetwheel by pin 17 of the throw-out pawl, and

the drive-pinion remains at rest, while the drill-shaft and the ratchet-wheel thereon rotates. \Vhen the check-row shaft is rocked sufficiently far to carry the pin 17 clear of an extension 8 of pawl 7, the spring 18 will rock the pawl on its eccentric pivot 7 and force the stud 10 into engagement with the ratchetwheel. The action of the check-row shaft is quick, as is Well understood, and by the time the drive-pinion has made a semirotation the pin 17 will be in place to intercept an extension of pawl 7 and force the pawl from engagement with the ratchet-wheel. The drillshaft is of the well-known class that receives motion from the travel of the planter, and the check-row shaft is, as its name implies, adapted to be rocked at cross-rows by a knotted wire or other outside influence. In this case the drive-pinion is geared to turn onehalf around while the seed-plate is making an operative movement; but this is optional and variable. If the drill-shaft should make a complete rotation, or any part of a rotation other than one-half, while the seed-plate is receiving the motion needed to drop a hill from the seed-cells, the result, so far as my invention is concerned, would be the same, or substantially so.

The form of clutch herein shown and described is a desirable but not indispensable one, as the essential requirement is that the d rive-pinion shall be loosely journaled on the drill-shaft, that the drill-shaft shall be driven continuously from the travel of the planter, and that connections shall be made and broken between the drive-pinion and the drillshaft through the intervention of the checkrow shaft.

But one drive-pinion and clutch are shown herein, as the conditions are the same for each seed-plate, and the representation of the opposite seed-plate and adjuncts would be mere duplication.

I claim- 1. In a corn-planter, the combination of a drill-shaft, a seed-wheel, a pinion loosely jonrnaled on the drill-shaft and geared with the seed-wheel, and means for connecting the pinion with the drill-shaft at intervals.

2. In a corn-planter, the combination of a drill-shaft, a seed-wheel, a pinion loosely jonrnaled on the drill-shaft and geared with the seed-wheel, a clutch to connect the pinion with the drill-shaft and means for actuating the clutch at intervals.

3. In a corn-planter, the combination of a drill-shaft, a seed-wheel, a pinion loosely journaled on the drill-shaft and geared With the seed-wheel, a ratchet-wheel fastened to the drill-shaft, a pawl pivotally connected with the pinion and adapted to engage the ratchet-wheel and a throw-out pawl to detach the pawl of the pinion from the ratchet-wheel of the drillshaft.

4. In a planter, the combination of adrillshaft, a check-row shaft, a seed-wheel, a pinion loosely journaled on the drill-shaft and geared with the seed-wheel, a ratchet-wheel fastened to the drill-shaft, a pawl pivotally connected with the pinion, a spring tending to hold the pawl of the pinion in engagement with the ratchet-wheel, and a throw-out pawl on the check-row shaft to detach the pawl of the pinion from the ratchet-wheel of the drillshaft.

In testimony whereofI sign my namein the presence of two subscribing witnesses.

WM. H. PA RLIN.

\Vitnesses:

H. O. TUXBURY, \V. O. WARREN. 

